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3.5 ANCHOR TRENCH <br />A. The anchor trenches shall be excavated to the lines, grades, and widths <br />shown on the Drawings, prior to geosynthetic placement. Design <br />Engineer shall verify that the anchor trench has been constructed <br />according to the Drawings. <br />B. The anchor trench shall be backfilled and compacted as approved by <br />Project Manager, Design Engineer, and Design Engineer. Anchor Trench <br />Fill shall be placed in 8 -in to 12 -in thick loose lifts and compacted by <br />wheel rolling with light, rubber - tired, or other light compaction equipment, <br />as approved by Design Engineer. <br />C. Extend geosynthetic into the anchor trench as shown in the Drawings. <br />The geosynthetic shall be seamed along the entire distance of the anchor <br />trench to the termination of the geosynthetic sheet. <br />3.6 PROTECTION <br />Slightly rounded corners shall be provided in the trench where the <br />geosynthetic adjoins the trench so as to avoid sharp bends in the <br />geosynthetic. <br />Care shall be taken when backfilling the trenches to prevent any damage <br />to the geosynthetic. At no time shall construction equipment come into <br />direct contact with the geosynthetic. If damage occurs, it shall be <br />repaired by Contractor prior to the completion of backfilling, at no cost to <br />Rio Grande Silver. <br />A. Do not use equipment or tools which damage the geosynthetic by <br />handling, trafficking, excessive heat, leakage of hydrocarbons, or other <br />means. <br />B. Ensure prepared surface underlying geosynthetic has not deteriorated <br />since previous acceptance, and remains acceptable until acceptance by <br />Rio Grande Silver, as detailed in Section 3.3. <br />C. Keep geotextile elements immediately underlying the geosynthetic clean <br />and free of debris. <br />D. Do not permit personnel to smoke or wear damaging shoes while working <br />on geosynthetic. <br />E. Unroll panels in a manner which prevents scratches or crimps in <br />geosynthetic and does not damage supporting soil liner. <br />F. Place panels in a manner that prevents wrinkles (especially differential <br />wrinkles between adjacent panels). <br />Rio Grande Silver Tailings Evaporation Pond 02620 -14 Geosynthetic Liner <br />August 2011 02620 <br />